...and while I'm going off on a rant....

Aww hell Frankie!  She's one of those itty bitty ones that has never had a weight problem of more than 10 pounds in her freaking life!  LOL

Anyway, thanks all for the advice!  I'll try it out the next time she shouts across the office at me and let you know how it goes!

I agree that she may have meant it as a compliment- some people over dramatize things in the way she did.  I also find that it makes people uncomfortable to think you can be smaller than them at some point in time and they are sometimes jealous you have a tool they don't have.  It's not an easy journey but it will never be one they will understand unless they have the surgery. 
I have lost 150 lbs and find that no one ever said "Wow- your fat!"  but won't hasitate to say stuff about you losing too much weight.  I'm glad that it has been so long now that I usually don't have to tell people anymore- 4 years.
5 years and goal reached later with a promotion with another employer and you won't have to deal with people like her!
Just keep doing what you are doing and concentrate on your goal- and silence - I mean complete silence to the person who made the comment sometimes works wonders!